BOJ - 20205 - 교수님 그림이 깨지는데요?

import sys

def solution():
    N, K = map(int, sys.stdin.readline().split())

    maps = []
    bitMap = [[-1 for _ in range(N*K)] for _ in range(N*K)]

    for _ in range(N):
        maps.append(list(map(int, sys.stdin.readline().split())))

    for idx in range(N*K):
        for jdx in range(N*K):
            bitMap[idx][jdx] = maps[idx//K][jdx//K]

    for b in bitMap:
        print(*b)

solution()

https://www.acmicpc.net/problem/20205